DUAL ORIGIN OF AEROSOLS IN TITAN'S DETACHED HAZE LAYER

被引：15
|
作者：
Cours, T. [1 ]
Burgalat, J. [1 ]
Rannou, P. [1 ,2 ]
Rodriguez, S. [3 ]
Brahic, A. [3 ]
West, R. A. [4 ]
机构：
[1] Univ Reims, CNRS, UMR 6089, GSMA, F-51687 Reims 2, France
[2] Univ Versailles St Quentin, CNRS, UMR 8190, Lab Atmospheres Milieux Observat Spatiales LATMOS, Versailles, France
[3] Univ Paris 07, CNRS, UMR 7158, CEA Saclay DSM IRFU SAp,Lab AIM, F-91191 Gif Sur Yvette, France
[4] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
来源：
ASTROPHYSICAL JOURNAL LETTERS | 2011年 / 741卷 / 02期
关键词：
planets and satellites: atmospheres; planets and satellites: individual (Titan); radiative transfer; scattering; AGGREGATE PARTICLES; OPTICAL-PROPERTIES; MODEL; BRIGHTNESS; ATMOSPHERE; SCATTERING; GROWTH; SATURN; SIZE;
D O I：
10.1088/2041-8205/741/2/L32
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have analyzed scattered light profiles from the Cassini Imaging Science Subsystem, taken at the limb and at several large phase angles. We also used results from an occultation observed by Ultraviolet Imaging Spectrograph in the ultraviolet. We found that particles responsible for the scattering in the detached haze have an effective radius around 0.15 mu m and the aerosol size distribution follows a power law (exponent about -4.5). We discuss these results along with microphysical constraints and thermal equilibrium of the detached haze, and we conclude that only a strong interaction with atmospheric dynamics can explain such a structure.
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页数：5
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